Mega Man Maker vs Ultimate Doom Builder

Mega Man Maker is a free fan game for creating, sharing, and playing user-made Mega Man levels. Its Level Builder lets creators assemble two-dimensional stages and save them as .MMLV files. Build Online supports real-time collaboration over the internet. Before uploading a level to the online server, its creator must beat it; accounts can upload up to 420 levels. Players can browse, search, sort, download, like, and dislike uploaded levels, or play Wily Challenge mode. The builder has space for 1,000 screens in a 50-by-20 layout, though listed asset counts are marked outdated. Players can report levels, and moderators have tools to handle reports, including those about offensive or unbeatable levels. The game runs on Linux, macOS, and Windows. It is a non-profit fan project unaffiliated with Capcom. The official homepage lists version 1.10.5.4, dated 24 August 2026.

Ultimate Doom Builder has no write-up on Specifiction yet; its figures are above.